Delanie is a spelling variant of Delaney, an Irish surname from Ó Dubhshláine, "descendant of the dark challenger", though some trace it to a Norman French place name meaning "from the alder grove". The -ie ending gives it the look of Melanie and Stephanie. Delanie has never been as common as Delaney: it ranked number 1184 in 2000, peaked at number 1079 in 2003 and stands at number 1705 in 2025.